Body Systems

• Alveolus - A structure inside the lungs where gas exchange takes place with the blood.
• Antagonistic Muscles - A pair of muscles that work together to control movement at a joint, as one muscle contract, the other relaxes.
• Asthma - A condition where triggers cause inflammation and narrowing of the airways, making it difficult to breath.
• Biomechanics - The combination of muscles and joints in the bones which allow the skeleton to bend and move.
• Bone - A tissue that forms a hard structure, used to protect organs and for movement.
• Bone Marrow - A soft tissue found inside bones that makes red and white blood cells.
• Cartilage - The strong, smooth tissue that covers the end of bones to prevent them rubbing together.
• Cilia - Tiny hairs on the surface of cells.
• Diaphragm - The sheet of muscle used in breathing.
• Diffusion - The movement of a liquid or gas particles from a place of high concentration to a place of low concentration.
• Exhale - Breathing out, removing carbon dioxide.
• Gas Exchange System - A system of organs that absorb oxygen into the blood and remove carbon dioxide from the blood.
• Inhale - Breathing in, taking in oxygen.
• Joint - Where two or more bones meet.
• Ligament - Joins two bone together.
• Lungs - The organ in which gas exchange takes place.
• Lung Volume - The amount of air that your lungs can hold.
• Musculoskeletal System - A system of organs and tissues that allow animals to move.
• Newtons - Forces are measured in Newtons.
• Ribcage - The bones and muscles that protect the heart and lungs.
• Skeleton - All the bones in an organism.
• Tendon - Joins a muscle to a bone.